Tire-rolling machine



(No Model.) A 2 Sheets-Sheet 1.

W. P. BETTBNDORF.

TIRE ROLLING MACHINE.

No. 436,207. PatentedSepLQ, 1890.

' 2 Sheets-Sheet 2.

(No Model.)

W. P. BETTENDORF.

TIRE ROLLING MACHINE No. 436,207. Patented Sept. 9, 1890.

' a front elevation of my machine; Fig. 2, a

SldG elevation of the same; Fig. 3, an elevamits the roll to give way,and thus prevents UNITED STATES PATENT, OFFICE.

WILLIAM P. BETTENDORF, OF DAVENPORT, IOWA.

TIRE-ROLLING FIVVIACHLIN E.

SPECIFICATION forming part of Letters Patent No. 436,207, datedSeptember 9, 1890.

Application filed May 20, 1890- To all whom it may concern.-

Be it known that I, WILLIAM P. BETTEN. DORF, of Davenport, in the countyof Scott and State of Iowa, have invented certain Improvements inTire-Rolling Machines, of which the following is a specification.

This invention relates to that class of machines in which the tire ispassed between bending-rolls, the relations of which may be changedaccording to the required curvature of the tire.

The improvements have reference to the means for sustaining, adjusting,and driving the rolls.

In the accompanying drawings, Figure 1 is tion of the roll-driving gear;Fig. 4, a plan View of one of the roll-sustaining yokes. Fig. 5 is aside elevation of the same.

Referring to the drawings, A represents a base-frame, to which there isfirmly bolted a top frame B, suitably constructed and provided withboxes to sustain the horizontal main shaft 0 and horizontaldriving-shaft D. The drivingshaft is provided with a drivingpulley d,fly-wheel d, and a pinion (1 which engages a gear-wheel e on the mainshaft' At its forward end, which is sustained in an overhanging arm ofthe frame, the main shaft carries a roll E, lying immediately overasecond roll F, carried by a shaft f. This shaft f is mounted in asustaining-yoke or frame G, (separately shown in Figs. 4 and 5,)provided with sustaining-trunnions g, seated in bearings in the mainframe, so that the roll F may move to and from the roll E to permit thepassage of tires of different thicknesses between them. In order to holdthe under roll up to its place, the sustaining-yoke is provided with adepending arm 9 perforated for the passage of a rod g, which is pivotedto the frame at 9 and provided at the outer threaded end with a hand-nut9 which acts through an intermediate sprin g g on the yoke arm. Byadjusting the nut the spring may be caused to urge the rollupward withany required degree of pressure. The spring perbreakage of the parts inthe event of a very thick bar being introduced between the rolls.

Serial No. 352,685. (No model-3 The roll-sustaining yoke G also sustainsa second horizontal roll I inadvance of the main rolls to act on theunder side of the tire.

The yoke also sustains two vertical guiderolls k W, to act on the edgesof the tire and direct the same between the bending-rolls, that it -maynot be twisted out of shape. These rolls are mounted on studs fixed bynuts in a slot in the yoke, so that they may be adjusted laterally.

In rear of the main rolls there is a fourth horizontal bending-roll K,sustained in a yokeframe L, which is constructed, mounted, and adjustedin essentially the same manner as the front yoke already described. Thetrunnions of this rear yoke (shown at l) are sustained in the main frameand its depending arm Z acted upon by a hand-nut Z mounted in thethreaded end of the rod Z fixed to the frame.

The shaft of the lower roll F is driven from the shaft 0 of the upperroll by the peculiarlyshaft 0 is provided with a pinion n, engagingapinion n, which in turn communicates motion through a pinion n to apinion n on the shaft f of the lower roll. The pinion n has its journalssustained in the yoke-frame a, mounted to turn around the shaft 0 asacenter. The pinion n has its journals mounted in a yoke or frame nmounted to turn on the lower roll-shaft as a center. The journals of thepinions n and n are connected by links a. The foregoing arrangementforms in efiect a flexible or adjustable gear-train, which permitsthe'lower roll and its driving-pinion n to rise and fall without in anymanner affecting the operation of the gear or changing the depth atwhich the teeth engage. By means of this gear frame I am enabled todrive the upper and the lower feed-rolls positively and at equal surfacespeeds without reference to the varying distances between them. 7 v

In operating the machine the rolls are driven in the directionsindicated by the arrows, and the bar to be bent passed between thevertical guide rolls 71 over the bending- -roll I, between the upperbending and feedoperate to feed the metal forward, while the rolls E, I,and K co-operate to eifect the bending of the same. As the metal isdrawn forward between the vertical rolls, they cause it to pass throughin a straight line, so that a lateral twist or bend becomes impossible.

Having thus described my invention, what I claim is j 1. In atire-bending machine, the combina tion of three bending-rolls, aspring-supported feed-roll arranged in opposition to one of thebending-rolls and driving-gear connected to the feed-roll and to theadjacent bending-roll.

2. In a tire-bending machine, the combination of an upper power-drivenbending-roll, two bending-rolls arranged to act on the under side of thetire, pivoted supports for the lastnarned rolls, and a spring acting onone of the supports to maintain the roll in operative position, and anadjusting device acting on the other support.

3. In a tire-bending machine, the combination of a bending-roll to acton top of the tire, two bending-rolls arranged at opposite sides of thetop roll to act on the under side of the tire, movable supports for saidunder rolls, a spring acting on one of said supports to hold its roll toits operative position, an adj ustingscrew connected with the othersupport, and a yielding feedroll arranged between the lowerbending-rolls.

4. In a tire-bending machine, the upper bending-roll mounted in fixedbearing, the opposing feed-roll mounted in a movable hearing, the fourpinions connecting the two rollshafts, and the connected pivoted yokeswhereby the intermediate pinions are maintained and kept in properoperative positions 5. In a tirebending machine, the combination of anupper bending-roll and a pivoted spring-supported bearing provided witha feed-roll and also with a bending-roll, where by the tire acts bydepressing the feed-roll to adjust the bending-roll.

6. In a tire-bending machine, and in combination with two bending-rolls,a third bending-roll, a pivoted support therefor, and a hand-screw foradjusting said support, whereby the relation of its roll to the otherbending-rolls may be varied at will.

7. In a tire-bending machine, and in combination with a pivotedroll-supporting yoke, the vertical guide-rolls mounted thereon.

8. In a tire-bending machine, the combination of a bending roll to acton one side of the tire, a pivoted feed-roll to act on the opposite sideof the tire, a second bending-roll, and a pivoted bar or support, inwhich the feed-roll and the second bending-roll are both mounted.

9. In a tire-bending machine, the combination of a fixed horizontalbending-roll, a cooperating bending-roll F, movable with relationthereto, a support for said roll mounted on a horizontal axis located inrear of the roll, and vertical guide-rolls sustained by the rollsupportin rear of its horizontal axis, substantially as described.

In testimony whereof I hereunto set my hand, this 8th day of May, 1890,in the presence of two attesting witnesses.

\VILLIAM P. BETTENDORF.

Witnesses:

F. STANLEY ELMORE, WV. R. KENNEDY.

